Inspect Superlock Carabiners that are identified with a four digit number
on the spine that begins with a "7" (see photo below). An interference
between the plastic liner and metal sleeve of the gate may prevent proper
closing or locking of the gate. Please clean your carabiner thoroughly
then check to ensure gate function has not been compromised over time.
Clean with mild soap and water and lubricate the rivet, hinge and between
the plate and metal sleeves of the locking mechanism with a lightweight
oil (WD-40). If gate does not close or lock, please return the carabiner
for inspection and possible replacement.